MAGNETIC EXCITATIONS IN SMB6 SINGLE-CRYSTALS

被引：43

作者：

ALEKSEEV, PA

MIGNOT, JM

ROSSATMIGNOD, J

LAZUKOV, VN

SADIKOV, IP

机构：

[1] CE SACLAY, LAB LEON BRILLOUIN, CEA, CNRS, F-91191 GIF SUR YVETTE, FRANCE

[2] IV KURCHATOV INST, MOSCOW, RUSSIA

来源：

PHYSICA B-CONDENSED MATTER | 1993年 / 186-88卷

关键词：

D O I：

10.1016/0921-4526(93)90580-Y

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Two, essentially dispersionless, magnetic excitations, at energies homega1BAR almost-equal-to 36 and homega2BAR almost-equal-to 14 meV, have been investigated by inelastic neutron scattering measurements on a single crystal of mixed-valent (SmB6)-Sm-154-B-11. The latter one decreases markedly upon heating, or with increasing Absolute value of Q. It is ascribed to the spin-flip of 5d electrons which form a bound state with the 4f electrons of a given site by tunnelling over the octahedron defined by its six nearest Sm neighbours.

引用

页码：384 / 386

页数：3

共 10 条

[1] LATTICE-DYNAMICS OF INTERMEDIATE VALENCE SEMICONDUCTOR SMB6 [J].

ALEKSEEV, PA ;

IVANOV, AS ;

DORNER, B ;

SCHOBER, H ;

KIKOIN, KA ;

MISHCHENKO, AS ;

LAZUKOV, VN ;

KONOVALOVA, ES ;

PADERNO, YB ;

RUMYANTSEV, AY ;

SADIKOV, IP .

EUROPHYSICS LETTERS, 1989, 10 (05) :457-463

[2] TEMPERATURE EFFECTS IN PHONON-DISPERSION OF SMB6 INTERMEDIATE VALENCE SEMICONDUCTOR [J].

ALEKSEEV, PA ;

IVANOV, AS ;

LAZUKOV, VN ;

SADIKOV, IP ;

SEVERING, A .

PHYSICA B, 1992, 180 :281-283

[3]

HOLLANDMORITZ E, 1986, PHYSICA B & C, V136, P424, DOI 10.1016/0378-4363(86)90461-4

[4] MECHANISMS FOR ANOMALOUS PROPERTIES IN SMB6 [J].

KASUYA, T ;

KASAYA, M ;

TAKEGAHARA, K ;

FUJITA, T ;

GOTO, T ;

TAMAKI, A ;

TAKIGAWA, M ;

YASUOKA, H .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1983, 31-4 (FEB) :447-450

[5] DEFORMABLE SHELL DESCRIPTION FOR THE PHONON-SPECTRA OF SEMICONDUCTORS WITH UNSTABLE VALENCY [J].

KIKOIN, KA ;

MISHCHENKO, AS .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 (31) :6491-6506

[6]

KIKOIN KA, COMMUNICATION

[7]

KIKOIN KA, IN PRESS PHYSICA B

[8]

Martin R. M., 1981, Valence Fluctuations in Solids. International Conference on Valence Fluctuations in Solids, P85

[9]

RAINFORD BD, IN PRESS

[10]

VONMOLNAR S, 1982, VALENCE INSTABILITIE, P397

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